Draft-rigging for railway-cars.



L F. OCONNOR. DAFT Rl-GGING FOR RAILWAY CARS: APPLICATION FILED Auemz. 1915.4

Patented May 7,1918.

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t @7% TTORNEY s J. F. OCGNNOR.

DRAFT RI-GGING FOR RAILWAY CARS.

APPLICATION man Aufmz. 1916.

1,265,490. Eatend May 7, 1918.

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W I TNESSES: 5

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DRAFT-RIGGING FOB, RAILWAY-CARS.

. Specification of Letters Patent.

fatented May W3', i913..

Application led August 12, 1916. Serial No. 114,520.

To all whom t may concern:

Be it known that l, JOHN F. OCoNNoR, a citizen of the United States, residing at Chiicago, inthe county of Cook and State of Illinois, have invented a certain new and useful Improvement in Draft-Riggingfor Railway-Cars, of which the following is a full, clear, concise, and eXact description,

reference being had to the accompanying Fig. l is a top plan view, partly inhorizontal section' onl line of 1. Fig. 3 is a cross section on line 3e-3 of Fig. 1.

Referring to the drawings, the numeral 8 indicates draft members, or parts of the car underframe, to which the draft rigging is applied. Between the draft mem ers a draft gear 10 is mounted, the same being supported by the tie plate .11, secured to the draft members and having associated therewith the usual rear stops 12-12, the front stops 13-13, thedraw-bar 14:, a draft yoke i5, which is secured to theA draw-bar by means of the transverse key 16. fron't follower is shown at 17. The draft gear- 10 `comprises a hollow shell 18,v closed at its back. by the preferably integral plate 19, y

and having mounted therein the spring elements 2O and the friction elements 21. rlhe friction elementscomprise' the wedge 22 and aplurality of friction shoes 23. The said shoes in the preferred form of my invention, shown in Figs. 1 to 3 of the drawings, are four in number. Each of [the shoes has an outer friction face 24 and an inner wedging face 25. The wedging face is formed between the shoulder 26 at its inner end and may be the shoulder 27 at its outer end, the said.

face bein provided in an insert 28, which o a hardened metal, as for instance hardened steel, `while the friction shoe may be made of cheaper material, as for instance malleable iron. The wedge is provided with 'a number of wedging faces, equaiing the number of friction shoes, each of said wedging, faces, as indicated at 29, beingopposed to one of the wedging faces of the shoes and bearing an antifriction roller 3() mounted between the said wedging face of thev wedge and the wedging face of the adjacent shoe. The wedge is formed of two sections, the throat 3l thereof bearing the wedging faces, preferably being of a hard material, as for instance hardened steel, and the head 3Q may be of a softer and cheaperunetal. The said head is provided at its inner end, as at 33, with a ,depressed portion, or'socket, to receive the inner portion or throat of the wedge therein. Each of theA shoes is provided back of'its wedging face with a recess,

. as at '342, forming a core opening which permits the satisfactory construction of the shoe without the employment of an excessive amount of metal.

The head 32 of the wedge is provided with a recess 36 vto receive the nut 37 of the connecting rod 38, which passes through the wedge and is provided at its rear end with a head 39 which is received within the recess 40 inthe rear plate -19 of the shell 18. A. washer 41 isv seated against the rearwardly faced shoulders provided upon the shoes,

Aand against this washer the front end of the inner spring 43's seated, the same being seatedat its rear end against the internal boss all, with which the rear end of the shell is provided. An intermediate spring 45 is coiled about the inner spring, the sa'id spring being seated at its forward end against the washer 41, and at its rear end against the rear end of the shell, an outer spring i8 inclosing the other spring is seated at its forward end against the friction shoes and at its rear end against the friction shells. The said three springs constitute the spring elements 20 hereinbefcre mentioned.' The forward, or friction portion, of the'slmll 18 is provided with an annular groove 49 formed between the front shoulder 50 and the rear shoulder 51 with which theg. shell is interiorly provided. The said annular groove is provided at intervals with longitudinally extended ribs 52,.there being two of said ribs for each of the friction shoes,`or eight in the preferred form of my invention illustrated in Figs. 1 to 3 inclusive. Against each of said ribs is mounted a friction plate 53, the said plates being held at their ends between the shoulders 5G and 51. The saidfriction plates may be of a hard material, such as hardened steel, and are readily removable when the friction elements are removed froni the shell.

Each of the friction shoes 23 has its friction face 24 arranged in two planes, an ular to each other, as indicated at the numera s 5a, 54 in Fig. 3 of the drawings, the said face being so arranged that one portion engages one friction plate 53 and the other portion engages an adjacent friction plate 53. The mounting of the said plates upon the ribs 52 serves to support the said plates along' their longitudinal center and also permits a per.u feet engagement between the friction slices and the said plates.

From the foregoing description, the action of the draft gear will be readily understood. On inward movement of the draw-bar, as in bufiing action,` the friction elements are forced inwardly in reference to the shell, the wedge spreading the friction shoes and forcing them into frictional engagement with the friction plates, the said inward movement of the friction elements being resisted by the spring elements. 0n forward movementof the draw-bar, the yoke draws the shell forwardly and the same action of the parts within the shell occurs as in bung action.

Upon wear of the friction plates, the saine can be readily replaced and by reason of the inserts in the friction shoes for the anti-fric- Lacune tion rollers to bear against a shoe of comparatively soft material may be used, having a wedging face of hard material, and lalso the said wedging Yface may, if desired, be readily renewed.

I claim 1. In a draft rigging for railroad cars, a draft gear comprising a shell, frictionelements including friction shoes within the shell, a plurality of removable friction plates within the shell, adapted to be engaged by the friction shoes, the Ashell being provided with longitudinalv ribs, the friction plates being mounted on said ribs. y f

2. In a draft gear, a shell, friction elements including friction shoes within the shell, friction plates mounted within the shell, the shellibeing provided with internal shouldersand having longitudinal ribs between said shoulders, the said friction plates being mounted between said shoulders and upon said ribs.

In witness that I claim the foregoing have hereunto subscribed my name this tlfify day of August 1916.

JOHN F. OGONNOR.`

Witnesses: l

EmzABn'rH M. Barra', LUoILLn HIGGINS. 

